A1 (auditory - hearing) Auditory Area 1, or A1, is for hearing, via the auditory system, to the primary auditory cortex.

The auditory cortex - involved in processing sound, identifying and segregating auditory “objects” and identifying the location of a sound in space. There are multiple auditory areas.

The primary auditory cortex (the temporal lobe) includes Brodmann areas 41 and 42, anterior transverse temporal area 41 (H), the posterior transverse temporal area 42 (H); in the posterior half of the superior temporal gyrus, dives into the lateral sulcus as the transverse temporal gyri (Heschl's gyri); additional areas the cerebral cortex, in the frontal and parietal lobes. The primary auditory cortex identifies the fundamental elements of music, such as pitch and loudness.

The secondary auditory cortex is processing of harmonic, melodic and rhythmic patterns.

The tertiary auditory cortex supposedly integrates everything into the overall experience of music.

The right auditory cortex is more sensitive to tonality.

The left auditory cortex is more sensitive to minute sequential differences in sound specifically speech.